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Finding the Fourth Proportional to 542,489.62, 748,624.08 and 313,028.90

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Solution

The fourth proportional to 542,489.62, 748,624.08 and 313,028.90 is: 431,973.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,489.62 : 748,624.08 = 313,028.90 : x
  2. Step 2: Convert to fraction form
    542,489.62/748,624.08 = 313,028.90/x
  3. Step 3: Cross multiply
    542,489.62x = 748,624.08 × 313,028.90
  4. Step 4: Simplify right side
    542,489.62x = 234,340,972,275.91
  5. Step 5: Solve for x
    x = 234,340,972,275.91/542,489.62
  6. Step 6: Final answer
    x = 431,973.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.